Electronic Device with Stretchable USB Receptacle

1. An electronic device comprising: an electronic device body having an accommodating recess; an universal serial bus (USB) receptacle disposed at the accommodating recess of the electronic device body; and a connecting cable having a cable reel and connected to the electronic device body to make the USB receptacle electrically connected to the electronic device body, wherein the connecting cable is wound in the cable reel to keep the USB receptacle staying in the accommodating recess, and when the USB receptacle is used, the connecting cable is drawn out, and the USB receptacle leaves the accommodating recess to be extended and used; wherein the electronic device body further has a cable winding button, and the cable winding button is used to trigger the cable reel to make the connecting cable retract into the cable reel.

2. The electronic device according to claim 1 , wherein a length of the connecting cable is bigger than a depth of the accommodating recess.

3. The electronic device according to claim 1 , wherein the electronic device body has an indentation recess at the front edge of the accommodating recess for taking out the USB receptacle.

4. An electronic device comprising: an electronic device body having an accommodating recess; an universal serial bus (USB) receptacle disposed at the accommodating recess of the electronic device body; and a connecting cable having a cable reel and connected to the electronic device body to make the USB receptacle electrically connected to the electronic device body, wherein the connecting cable is wound in the cable reel to keep the USB receptacle staying in the accommodating recess, and when the USB receptacle is used, the connecting cable is drawn out, and the USB receptacle leaves the accommodating recess to be extended and used; wherein the cable reel retracts the connecting cable into the cable reel by drawing the connecting cable to trigger the cable reel.

5. The electronic device according to claim 4 , wherein a length of the connecting cable is bigger than a depth of the accommodating recess.

6. The electronic device according to claim 4 , wherein the electronic device body has an indentation recess at the front edge of the accommodating recess for taking out the USB receptacle.

7. An electronic device comprising: an electronic device body having an accommodating recess; an universal serial bus (USB) receptacle disposed at the accommodating recess of the electronic device body; and a connecting cable having a cable reel and connected to the electronic device body to make the USB receptacle electrically connected to the electronic device body, wherein the connecting cable is wound in the cable reel to keep the USB receptacle staying in the accommodating recess, and when the USB receptacle is used, the connecting cable is drawn out, and the USB receptacle leaves the accommodating recess to be extended and used; wherein the electronic device body has an ejecting button via which the USB receptacle leaves the accommodating recess.

8. The electronic device according to claim 7 , wherein a length of the connecting cable is bigger than a depth of the accommodating recess.

9. The electronic device according to claim 7 , wherein the electronic device body has an indentation recess at the front edge of the accommodating recess for taking out the USB receptacle.